The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 1992
Filed:
Aug. 16, 1989
Applicant:
Inventors:
Harald Sauer, Frankfurt, DE;
Bernd Thone, Friedberg, DE;
Assignee:
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106705 ; 106707 ; 106D / ; 423432 ; 423D / ; 423244 ; 405128 ;
Abstract
For a treatment of the residues which become available as dry dust in the purification of exhaust gas and contain, inter alia, 5 to 12% by weight CaO and have a conductance in excess of 6000 .mu.S/cm, a process is proposed in which the residues are fluidized with purified exhaust gas in a circulating fluidized bed system consisting of a fluidized bed reactor, separator and recycling line and the CaO contained in the residues is reacted with the CO.sub.2 contained in the exhaust gases to form CaCO.sub.3.